Patent GB-419600-A (GB)
Title: Improvements relating to electrically operated calculating apparatus
IPC: G06F7/42
Filed: 1933-05-10
Abstract: 419,600. Calculating -- apparatus. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, SOUTHAM, A. A., 58, Larchwood Road, New Eltham, and BROOME, J. H., 80, Leyland Road, Lee, all in London. May 10, 1933, No. 13616. [Class 106 (i).] In an electrically operated calculating- apparatus for registering and totalling a series of cash or other values transmitted thereto in the form of electric signals, each value is represented by one or a plurality of distinguishing signals, a register is provided for each type of signal, and the denominational values of the registers are such that any amount may be added by advancing one or more of the registers simultaneously one step only. Transfers from several of the registers are made to common registers and should several transfers to a common register become necessary simultaneously they are made in succession. The registers may comprise step - by - step switches as used in automatic telephony, or relays, and the total may be indicated on a lamp panel. General. The invention is described as applied to decoding and totalling cash transactions recorded in succession along a record strip, each transaction being recorded in the form of one or more code marks, perforations, or depressions formed transversely across the strip. Five columns of perforations are used representing, respectively, basic values of 1d., 2d., 2d., 6d., 1/-, while a further column is used to indicate "no transaction." The strip is advanced automatically by an electric motor until a row of perforations is encountered by a feeler mechanism, when the motor is stopped until the transaction has been registered. The feelers operate to close any of the contacts ms1, ms2, .... ms5, Fig. 3, and to open the corresponding contacts ms1a, .... ms5a, respectively, when the respective perforations representing 1d., 2d., 2d., 6d. and 1/- are encountered. Associated with these contacts are corresponding decoding relays A, B, .... E which when operated serve to step the corresponding registering switches d1, ..., da1, ....., db1, ....., dc1, ..., and s1, ..... Transfer is effected from the penny switch d1, ..., either of the twopenny switches da1, .... , db1, ... or the sixpenny switch dc1, .. to the shilling switch s1, ..., independently for each pence switch, so that a condition may arise in which the sum of the registrations on the switches d1, ..., da1, ...., db1, ...., dc1, ... exceeds 1/- without a transfer to the 1/- switch s1, .... being made. This however is taken into account in the totals display arrangements comprising, for example, lamp indicators operated over banks of the registering switches. A ú1 registering switch l1, ... , and switches tt1, ... , tta1, ... for indicating the number of transactions made are also provided. Direct registrations. When current is first switched on to the apparatus relays MV, MT, Fig. 3 energize over the circuit +ve, ms5a, ....., ms1a, whereupon a relay V energizes over contacts ms6, mv1. A relay M, Fig. 1, also operates over contacts rsa5, a3, b3, d3, e3 and closes a locking circuit for relay V over contacts v1, m6. To commence operations a key RK1, ... is thrown. At key contacts RK2, Fig. 3, the motor drive magnets PFDM are energized alternately over their rocking contact pfi to advance the record strip until the feelers encounter a set of code transactions when the appropriate contacts ms1, ... and ms1a, ...., are operated. If the transaction is for 1d, for example, then contacts ms1 are closed and ms1a opened. Relays MT, MV release, contacts mt1 close to energize both the magnets PFDM to stop the record strip, and a relay H now energizes in series with a delay coil RA over contacts ms6, mv1. The penny decoding relay A is energized over contacts ms6, v1, m6, h1, ms1, and at contacts a3, Fig. I releases relay M, whereupon the 1d switch drive magnet DDM, Fig. 3, energizes over the circuit RK3, Fig. 2, m2, al, dil, in parallel with the drive magnet TTDM of the totals switch tt1, ... When these magnets are fully energized their interrupter contacts ddm, ttdm break locking circuits made for relays V and A upon energization of the latter, and since the original operating circuit of relay A is opened at m6, relays V and A release, whereupon the magnet DDM steps the wipers d1, ... of the penny switch, and relay M again energizes over contacts a3, whereupon the totals switch tt1, ... is stepped. A circuit is now closed for relay MT over ms6, v1, and key contacts STK1 whereupon contacts mt1 open to allow the magnets PFDM to advance the record strip. As soon as the code perforations pass the feelers, contacts ms1 and ms1a go to normal and relay MV again operates in series with MT. Relay V again operates and the apparatus is ready to register further transactions. For the registration of other transactions the relays A, ... E are operated singly or in combination (according to the code) and the corresponding registering switches are stepped in the manner as set forth for switch d1, ..... The greatest cash value that can be dealt with is 1/11d. when all the relays A, ... E will be operated together and the registering switches d1, .., da1, ..., db1, ... dc1, .. , s1, .. stepped simultaneously. Larger cash values may be dealt with however by the provision of further columns of perforations on the record strip and further relays and associated apparatus corresponding to relays A, ..... E. Transfer arrangements. When the twelfth penny is being registered on switch d1, ..... the drive magnet DDM is energized in parallel with a relay TD, (over wiper d8), the relay locking over its right-hand winding and contacts td1, tda1. When the switch d1 is stepped to register the bet and relay M is again energized, a relay TDA is energized over the interrupter contacts sdm1 of the shilling switch s1, ..., contacts m4, and td3, and relay M is held operated over its second winding and contacts m1, tda4, td4 to prevent another direct registration before transfer is effected. Over contacts tda2 the drive magnet SDM of the shilling switch is energized which when fully energized breaks at its interrupter contacts sdm2 the holding circuit of relay TD which in releasing, releases relay TDA whereupon switch s1, ...., is stepped to register the transfer. Transfer from the 2d. switches da1, ... db1, ... and the 6d. switch dc1, ... is similar, the transfer relays TD, TDA, for switch d1, ... corresponding to transfer relays TA, TAA for switch da1, ..., TB, TBA for db1, ..., and TC, TCA for switch dc1, .... Should two or more of the transfer relays TD, TA, TB, TC be energized simultaneously then the contacts td3, ta3, ... ensure that the transfers are effected successively to the shilling switch. Transfer to the ú1 switch l1, ... is effected by means of a relay TS which is energized over wiper s1 in parallel with the shillings switch drive magnet SDM during registration of the twentieth shilling. Relay TS locks over contacts ts1, and interrupter contacts ldm of the ú1 switch, and at contacts ts3 holds relay M energized to prevent a direct registration until transfer is effected. Over contacts ts2 the ú1 switch drive magnet LDM is energized ; it de-energizes the relay TS at its interrupter contacts and is then itself released to step the ú1 switch. Display arrangements. The pence display is effected over the banks d2, ... d7, db2, ... db7, da3, da4, and dc3, Fig. 1, which are wired in such a manner as to energize from the + ve at wiper dc3 the appropriate display wire 0, .... 10, 11, corresponding to the sum of the amounts registered on the switches d1, ..., da1, ...., db1, ..., and dc1, ..... The shillings units display is controlled by wipers s4, ... s7, and the tens display by wiper s8. The pounds display is controlled by wipers l2, l3, (units) and l4, l5, (tens). If the sum of the registrations on the pence switches does not exceed 1 /-, the shilling units display wire is energized from + ve over contacts det1, ddt1, .... aat1, and wiper s4. If, however, the sum of the pence registrations exceeds 1 /- then the circuit to the pence display wire includes one or more of the temporary transfer relays DAT, DBT, .... DET, BAT, BBT, BCT, AAT, ABT which operate and deflect +ve at contacts det1 to one of the banks s5, s6 or s7 whereby the shillings units display is increased by one, two or three as the case may be. Moreover one of the relays ST, STA, STB will be energized depending on the operative bank s5, s6, s7, which if necessary, will, at its contacts in the bank s8, alter the shillings tens display and, if a temporary transfer to the pounds is necessary, then a relay LT is operated diverting the pounds display wires from wipers l2, l4 to l3, l5 whereby the pounds display is increased by one. The display arrangements may be normally de-energized and rendered operative when desired by throwing a key. The total number of transactions made is displayed over the banks tt3, units, tt4 tens, tta2, hundreds, and tta3 thousands, Fig. 3. Normally the tens display is effected over wires 0, 1, ... 4 but when the fiftieth transaction is made a relay R, Fig. 4, is energized over bank tt2. After the switch tt1, .... has stepped, a relay T energizes and operates a relay TX which at contacts tx1, ... tx5 causes the tens display wires 5, ... 9 to be operative during the second rotation of switch tt1, ..... When the hundredth transaction is being registered the drive magnet TTADM is energized in parallel with TTDM to advance the switch tta1, ... and the relays R, T, and TX go to normal. In the event of a "no transaction" record being encountered by the feeler mechanism contacts ms6 open to guard against operation of any of the decoding relays A, ... E, and ms6a close to provide a locking circuit for relay MT to prevent the strip feeding motor from stopping. Since the registering switches are all twenty-five point switches and some of their contacts are not used, arrangements are provided to s